US PATENT SUBCLASS 218 / 157
.~.~.~ With venting means

Current as of: June, 1999
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218 /   HD   HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES

1  DF  ARC PREVENTING OR EXTINGUISHING DEVICES {14}
155  DF  .~ Housing structure {1}
156  DF  .~.~ Arcing chamber {2}
157.~.~.~ With venting means

DEFINITION

Classification: 218/157

With venting means:

(under subclass 156) Subject matter including means to release excess pressure occurring within the arc chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

35, for magnetic blowout arc chute.

99, for liquid circuit interrupter housing or tank.

106, for liquid circuit interrupter arcing chamber.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

306, for details of venting means in a switch housing